Wrapping-machine.



A. HECK.

` WR'APPING MACHINE. APPLICATION FILED NOV. 9. i915. I

- Patented Mar. 4,1919.

a o w H z l `M .,IIIII AUGUSTUS HECLOE SPRINGFIELD, MASSACHUSETTS, AssfGNon To` JEACKAGLEy 'MACHINERY COMPANY, OESPEINGFIELD,MASSACHUSETTS, A CORPORATION OE MASSACHUSETTS.

` PING-MACHINE.

1,295,988, f Specification of Letters Patent. Patented Mam, 41., 19119, i 60,596.

State of .App licatiem led November 9, 1915. Serial No.

To all ivlwmvzt magi/- concern.'-

Be it knownthat I, AUGUSTUS HECK, a

citizen of the United States, residing at Springfield, in the county of Hampden and Massachusetts, have invented certain Improvements in `Wrapping-lidachines, of which the following descriptlon, 1n connection with thel accompanying drawings, 1s

a specification, like reference characters onA the drawings indicating like parts in the several y figures@ 1 This invention relates to machines ldegsignedfto fold a band, label, or, other sheet of wrapping material (hereinafter for convenience referred to as a wrapper) about an article and aims particularlyto facilitate the applica-tion `of adhesive material to the that will fold wrapper and to the provision of mechanism the wrapper about the article tightly'. l More specifically the inventlon aims to improvethe machine shown and described-in Patent No.- 1,006,081', granted Ocy showing different steps rily understood l tionwhen read 1n connectlon tober 17, 1911. The invention will be readcompanyin drawings, andthe novel features will pointed out in the appended lclaims.

In the drawings,

Figured is a side elevation of-a mechanism lembodying this invention, certain of the parts ing shown in sections Fig. 2 is an elevation of the sldeof the mechanism opposite'to that shown in Fi T1;

Figs. 3 and 4 are diagrammatic vlews in the wrapping Operation; and

Figs. 5 and 6 arev perspective views of a package showing themethod ofwrapping.

, instance, as cakes lThe machine shown in the patentabove desi ted has found a substantial finarket in t e wrapping of 'small articles, such 'for cles usually are-inclosedin an inside wrapper, 'forminIg a package substantlally as indicated at inFig. 5, and ,the package so produced is then inclosed in or encircled by a wideband or wrapper W, Fig.' 5. The mahine-sho'wn in the patent above'mentioned 1s designed to perform bothof these wrapping operations but in the accompanying drawings a mechanism for performing the second Operation only is shown. As fully explained ingsaid patent, the articles to be wrapped are'advancedthrough the machine from the following descrip- Apackage in a loose of chocolate. These arti- -the artlcles; and this arm then carries this' article into thepocket of a tumble box 51.

Thls operation folds he wrapper W partly about the package P. `The operating mechanism for the tumble box then gives it a half rotation in the direction indicated by the arrow in Fig. 1, thus bringing the article with the wrapper partially folded aboutit into the positlon in which it is shown in said figure and leaving the package substantially 1n the condition in which it is shown in Fi 5.l The pusher arm 14 next ejects this pac age from the tumble box carrying it into another channel 16, the top plate of which channel folds the flap f of the wrapper over 'intothe position in which it is shown in Fig. 6. While the pusher arm 14 is ejecting the package in `this manner, the arm A13 is pushing another package into the "tumble l,0X and both arms then swing downwardly and return to the positions in shown in Fig. 1 in the manner fully described in the patent above designated.

It sometimeslh'appens that the vwrapper Hap f sagswhile the arm 14 is ejecting the packagel from the turnblebox and' .that consequently the wrapper is folded over the or wrinkled condition. While the packagejs in the position which it appears in Fig. 1, a glue tank 74 carrying a glue applying roll 81 is swung downwardly to bring the roll into contact with the margin-of the flap strip of adhesive to itA as in Fig. 5. In some cases, the vflap f is short, due fact that it is desired to havethe lap in the wrapper come substantially in the mlddle of the upper face of the package, it is diiicult to arrange the parts so that the roll 81 will always apply glue. to the flap in the desired manner. The present invention provides a construction in which just described are overcome.

which they are lcated at'g in articularly where both of the objections and apply a or instance to the i i i i mai The mechanism. so far described is substantially like that shown in the patent v above named. Power is applied to the driving shaft of the machine in any convenient manner and thisv shaft carries a bevel gear 21 that meshes with another gear on a shaftl 22 to which is fixed the driver 24 for a Geneva wheel 25 mounted on another shaft 26 that is mounted above and tact with ay roll 30 mounted'to rotate in suitable bearings carried by a small bracket 31 that is supported by the machine frame.

l Vhile the flap rests on this roll, theI glue tank 74 is swung down far enough to bring the roll 81 against the flap f at a point opposite the -polnt' at which 1t is supported by the roll 30. The flap thus is grasped or pinched between these two rolls. The supporting and operating mechanism employed lto give the tank 74 this movement comprises an arm 77 that is supported by a rock shaft 78 and supports the tank on its free end. The free end of another arm 7 9v ,secured to the ,rock shaft 78 bears on a bolt`86 that is adjustable on the upper end of a post or rod 87 mounted to slide vertically in a guide 'supported by the machine frame. The lower end of this rod 87 carries a roll that runs on theperiphery of a cam 88 mounted fast on the shaft 20. This operatin mechanism gives the tank 74 and the rol 81 which is journaled in the bottom of the tank an oscillating movement in the arc of a circle about the axis of the shaft 78 as a center. Part of the periphery of the roll 81 is exposed throughV a slot in which the roll fits snugly at the bottom of the tank 74 and during -the upward movement of the tank this roll is rtated in order to expose a freshly glued surface to the lap f upon the next downward movement of the tank. For this 4purpose the shaft 84 on which the roll 81 is mounted'is provided at one end of the tank with a ratchet wheel 83 that meshes during the upward ymovement of the tank with the teeth of an .arm 85 that is pivotally mounted and is yieldingly held against the wheel by a spring (not shown). This con' struction while slightly different in details is, in all substantial particulars, like that shown and described in the patent above designated. A pawl 83 prevents reverse rotation of the r'o'll81'. j, I p

While the rolls 30 and 81 are gripping the end of the wrapper flap f, a folder bar -33 is moved vinto contact with the flap beieaeee tween the article and the point at which 35 and connected by a link 36 with one end of a lever 37 which is fulcrumed on the rock shaft 38 and carries a roll 39 that runs on the periphery of a cam 40 fast on the shaft 20. A springv 41 encircles the link '36 and acts on said link in a direction tending to hold ythe bar 33 in the receiving end of the channel 16; or in other words, directly in front of the package vpositioned in the tumble box 5.1 and just below the middle portion of the Hap f. The cam 40 next operates through the connections just described with the lever 34 to swing the folder 33 from the position in which it appears in Fig. 1 into that in which it is shown in Figs. 3 and 4, where it becomes operative totension the flap f in the .manner above described. Thelfolder 33 is now positioned just above the path of the ejecting Imovement of the package P and as the pusher arm 14 moves through the pocket in the tumble box 51 to eject the package, pushing it from the position shown in Fig. 3 to that f shown in Fig. 4, the package slides under the folder 33 which swings the flap f upwardly across the front face of the package and then moves this iiap over on to the top of the package as the ejecting movement continues. The roll 81 is moved away from the roll 30 just before the flap f is pulled out' from between these two rolls so as to avoid the smearing of glue on the roll 30 and also to avoid applying. glue too close to the edge of the flap. The small roll 42 positioned at the lower side of the receiving end of the channel 16 and directly under the folder 33 facilitates the ejecting movement of the package. Thisfolding operationlays the glued end of the' iap on to the end already folded'and completes the wrapping' operation, leaving the package in the condition in which it appears in Fig. 6.

It is obvious that the adjustment of the parts will depend largely upon the ma! A terlal from which the wrapper is made, the

nature of the package, and similar conditions. It 1s not always necessary to have the rolls 30 and 81 pinch the flap f in the as indicated at 91 t0 receive a bolt projecting therethroughA from the slide 90 and serving toclamp the gluepot in any adjusted position. The vertical limits of movement of the glue pot, and consequently icult to glue a naaacea of the glue applying roll 81 can be varied by adjusting the bolt 86 in the post or rod 87. When the wrapper W is made of very stiff paper or other lirm material it usually is unnecessary to pinch the flap between the rolls 30 and 81 since this material is much less liable to sag or wrinkle and the moveto substitute a new brac et for the bracket' 31 so as to position the roll 30 more nearly opposite the roll 81. The construction provided by this invention is of s ecial utility where wrappers having short aps are used, even though the parts are not adjusted 'so as to pinch the iap; in fact it is often difshort flap satisfactorily without this mechanism. By using the folder bar 33 and the operating mechanism therefor, the motion of this folder can be utilized to swing the flap against the roll i 81, the motion of this roll being so timed `that it will be moved down into the (path in which the iap is swung by the fol er and then moved out of said path again. The folder 33 also performs the function of substantially closing the space between the tumble box and the chute 16. Considerable space must be provided at this point in order to permit the longitudinal wrapper flap to swing into the proper position for the gluing operation. But when the package is forced out of the tumble box into the chute, unless this space is closed, the

rear fiap which has already been folded on to the package sometimesA iiips up as the package is pushed out of the tumble box and 1s doubled back by the folding of the rear flap. The folder eii'ectually prevents any such action by substantially closing the space between the tumble box and the chute when the package is forced out of the tumble box into the chute.

It is obvious that'this invention may take many forms and that many changes ma be made in the details of construction wi out departing from the spirit or scope, of the invention.

Having thus described my invention, what I claim as new and desire to cure by Letters Patentof the United States is:

1. In a wrapping machine, the combination -with means 'for partially folding a wrapper about an artlcle leavin an unfolded wrapper iiap extending t erefrom, ofdevices for graspmg said flap, and wrapper tensioning means mounted and o erated independently of said devices an con structed and arranged to perform its wrapat which the 2. In a wrapping machine, the combinalof means for grasping said tion with a tumble box,

per tensioning operation by Aengaging with said flap between said article and the point fiap is grasped by said devices.

tion of means for partially foldin a per around a substantially unyiel cle leaving an unfolded tending therefrom, ing said Hap to tighten the wra per about the article while the entire artic e remains stationaryl` and prior to the folding of said flap upon the article.

3. In a wrapping machine, the combination with means for partially folding a wrapper around an artlcle, leaving an unfolded. wrapper iiap extending therefrom,

ap, a device operative to bear on the flap between said artlcle andthe point at which it is grasped by said means, and driven mechamsm independent of said wrapper grasping means for moving said device to cause it to tension the wrapper. v

4. In a wrapping machine, the combination with means for partlyjolding a wrapper aroundan article, leaving an unfolded wrapper Hap extended therefrom, of a glue applying device mounted for movement into contact with vsaid Hap, means coperating with said device to grasp said Hap, a memwrap ing artiwrapper fiap exber mounted for movement into contact' with said Hap at a point between the article and the point at which the ap is grasped by said devices, and means for moving said member to cause it to tension the wra per.

5. In a wrapping machine, the com' ina-- tion with means for partly folding a wrapper around an article, leaving an unfolded wrapper flap 2extending from said article and means for advancing the article to effect a further wrapping operation, of a folder mounted for movement across the' artic e, and means for and holdin it across t ment of sai folder.

7. In a wrapping machine, the combinameans coperating ush an article to be wra ped asping said flap e path of `movetherewith to into said tum ing a wrapper around the article, o rating le box thereby partially oldand means for tensionmechanism for said tumble box an a. chute 120 Swin said flap across the forward face ofthe v 'into' which the article is ejected from said tumble box, of a device movable across the path of the ejecting movement of lsaid article and operative to swing the unfolded Wrapper liap into position across the face of the article, and operating mechanism for tion with a tum le box, means coperating therewith to push an article to be wrapped said device. l

8. In a wrapping machine, the combination with a tumble box, means coperating therewith to ush an article to be Wrapped into said tum le box thereby parti-ally folding a wrapper around the article, operating mechanism for said tumble box and a chute into which the article is ejected from said tumble box, of a device movable across the path of the ejecting movement of said article and operative to swing the unfolded wrapper flap into position across the face of the article, operating mechanism for said device, and a glue applyin .device positioned in the path in whic said Hap is moved by said device.

'9. In a IWrapping machine, the combination with a tumbl'e box, means coperating therewith to ush an article to be wra ped into said tum le box thereby partially olding a wrapper around the article, operating mechanism for said tumble box and a chute into which the article is ejected from said tumble box, of a device movable across the path of the ejecting movement of said article and operative to swing the unfolded wrapperlap into position across the face of the article, operating mechanism for said device and means coperating with said .device to tension the Hap.

10. In a Wrapping machine, .the combination with a tumble box, means coperating therewith to push an article to be wra ped into said tumble box thereby partially olding a wrapper around the article, operating mechanism for said tumble box and a chute into which the article is ejected from said tumble box, of a folder movable across the path of the ejecting movement of said arti- Lacasse cle into position to fold said flap on to the article when the article is ejected from the tumble box, and means for grasping said flap and holding it across the path of move ment 'of said folder.

l1. In a wrap ingy machine, the combinanto said tumble box thereby partially folding a Wrapper around the article, operating mechanism for said tumble box and a chute into which the article is ejected from said tumble box, of a folder movable across the path 'of the ejecting movement of said article into position to fold said flap on to the article when the article is ejected from the tumble box, and means including a glue applying device operative to grasp said fiap `and hold it across the path of movement of said folder.

l12. In a wrapping machine, the combination with a tumble box, means coperating therewith to ush an. article to be wrapped into said tum le box thereby partially folding a wrapper around the article, operating mechanism for sai'dltumble box and a chute into which the article is ejected from said ytumble box, of a folder mounted for move' ment transversely of the path ot the .ejecting movement of said article into a position just above said path Where it partially closes the space between the tumble box and said chute.V

13. In a wrapping machine, the combination of mechanism for partially folding a wrapper around an article leaving an unfolded wrapper flap extending therefrom, and additional mechanism for acting onsaid Wrapper Hap to tighten the wrapper about the article While the article remains stationary, said additional mechanism including means for grasping the wrapper lap.

In testimony whereof I have signed my name to this specification.

AUGUSTUS HECK. 

